Finding an apartment in Oslo can be a competitive process, and the approach largely depends on your preferences and circumstances. Many newcomers turn to online platforms, such as Finn.no (one of the main rental platforms) or the Facebook group “Oslo Housing, Rooms, Flats, Apartments, Sublets” (facebook.com/groups/487285978392879), where individuals often post listings for available apartments, making it a cost-effective and direct way to search for housing. However, the demand can be high, and you might face stiff competition for desirable properties. 

Alternatively, recruiting a real estate agent can be advantageous, especially if you prefer a more guided and efficient search. Real estate agents have access to a broader range of listings and can offer tailored advice and help with the paperwork and negotiations. It's a good idea to explore all options, including online classifieds and official housing websites, to find the best fit for your needs and budget.